JP2021138394A - Spout with cover member - Google Patents

Abstract

To provide a spout port having a structure that prevents separation of a component after the opening of a container while maintaining a sanitary state of the contents stored in the container.SOLUTION: In a spout provided with a cover member, according to the present invention, a closure which can be folded off via a weakened portion is integrally formed on an inner peripheral surface of a cylindrical portion. The closure includes a cylindrical portion for fitting in and a pair of engagement ribs. On the inside of the cover member, a plug for folding off is formed which extends downward in an axial direction so as to grip the closure. This plug for folding off includes: a recessed portion into which a cylindrical portion can be inserted; and a projecting portion which can be inserted into an accommodating groove portion. A wing wall extending along the circumferential direction is formed on a side of the projecting portion so as to cover at least a part of a side surface of the closure.SELECTED DRAWING: Figure 1

Description

The present invention includes a spout that is welded to a bag-shaped container or a paper container formed of a plastic film, aluminum foil, or the like and functions as a pouring path for the contents, and a cover member attached to the spout. Regarding spouts with members.

The spout used as a spout for pouring out the contents stored in the container has a cylindrical shape with both ends open as a whole, as exemplified in Patent Document 1, and has a cylindrical main body and the spout. It is formed from a container joining cylinder integrally connected to the lower part of the cylindrical main body, and the internal space of the cylindrical main body and the container joining cylinder is a through path for pouring out the container content liquid. The opening of the container (pouch) is joined and fixed to the container joining cylinder by a heat seal, and the cylindrical main body is covered with a cap and detachably attached to be used as the above-mentioned dispensing port.

The spout, which thus functions as a dispensing port, contributes to the dispensing of various liquid materials stored in the container. Here, when it becomes difficult to take nutrition by mouth for some reason, so-called intestinal nutrition is used. As a more specific aspect of enteral nutrition, a hanging RTH (Ready To Hang) preparation in which a pouch is previously filled with a content containing a nutritional supplement to be administered to a patient is widely used.

In such RTH preparations, a spout for pouring out the contents is often welded to the pouch. When administering the contents to the patient, the tip of the spout is opened immediately before administration, and one end of the opened spout is connected to the other end of the catheter inserted into the patient's body. By connecting the connector, the patient is administered the contents containing the nutritional supplement.
Further, conventionally, in the use of such an RTH preparation, as exemplified in Patent Document 2, a male connector portion is formed on a spout welded to a pouch, and a female connector portion is formed on a connector attached to a catheter. Was common.

On the other hand, in recent years, in order to prevent medical accidents due to incorrect connection with connectors used in fields other than enteral nutrition, the connectors have been internationally standardized as ISO80369-3, the international standard for enteronut medical devices. Is being considered.

As a connector corresponding to this ISO80369-3, in Patent Document 3, in order to ensure a suitable connection with the male member shown in FIG. 14, a female member having a hollow cylindrical shape and a female member provided at the base end of the female member are provided. A female connector comprising a small-diameter portion having an inner diameter smaller than the inner diameter of the female member and a sealing body connected to the small-diameter portion via an annular thin-walled portion to seal the small-diameter portion is shown. There is. According to Patent Document 3, the thin portion of the female connector is broken to remove the sealing portion to open the female member, and the male member is inserted into the female member so that the small diameter portion communicates with the male member. It is disclosed that it is composed of.

Japanese Unexamined Patent Publication No. 2010-269836 Japanese Unexamined Patent Publication No. 2013-60213 Japanese Unexamined Patent Publication No. 2018-25537

As described above, when the RTH preparation is constructed in accordance with ISO80369-3, according to Patent Document 3, it is opened by removing the sealing body that seals the flow path, and a liquid substance is formed on the inner peripheral surface of the female member. A female connector (pouring port) that is difficult to adhere to can be realized to some extent.
However, in the female connector (injection port) shown in Patent Document 3, it is undeniable that the encapsulant separated from the female member may be unintentionally detached.

Further, for example, when a female connector is configured as an application of the above-mentioned RTH preparation, it is expected to be used in a hospital room such as a hospital or a treatment center. Therefore, it can be said that it is desirable from the viewpoint of parts hygiene management that the encapsulant can be more reliably held in the cap after the encapsulant is separated from the female member by turning the cap or the like.

Therefore, one of the objects of the present invention is, in view of the above-mentioned problems, a structure in which the dispersal of parts such as a sealed body after opening the container is suppressed while maintaining the sanitary state of the contents stored in the container. Is to provide a payout port.

In order to solve the above problems, the spout with a cover member according to one embodiment of the present invention includes (1) a spout having a cylinder portion and a welded portion provided on the base end side of the cylinder portion and fused with the container body. A spout with a cover member including a cover member covering the outer peripheral surface of the cylinder portion, and a closing body that can be broken off via a weakened portion is integrally formed on the inner peripheral surface of the cylinder portion to form the closing. The body has a columnar portion extending upward in the axial direction, an accommodating groove portion is formed on the bottom surface of the columnar portion, and a lower portion in the axial direction so as to grip the closed body inside the cover member. A folding plug extending to the surface is formed, and the folding plug includes a recessed portion into which the cylindrical portion can be inserted and a protruding portion that can be inserted into the accommodating groove portion, and is lateral to the protruding portion. Is characterized in that a wing wall extending along the circumferential direction is formed so as to cover at least a part of the side surface of the closed body.

In the spout with a cover member according to (1) above, (2) the closed body further has a hem column portion protruding in the radial direction from the outer peripheral surface of the columnar portion, and is between the hem column portions. It is preferable that the accommodating groove portion is formed.

Further, in the spout with a cover member according to the above (2), (3) the hem column portion is expanded in the circumferential direction so that the flat cross section becomes a semicircle with the columnar portion as the center side. The folding plugs are formed in pairs so as to sandwich the columnar portion, and the protrusions are formed in pairs so as to project from the bottom surfaces of the pair of folding plugs. Is preferable.

Further, in the spout with a cover member according to any one of (1) to (3) above, (4) the wing wall is connected to the side surface of the protrusion and extends in the circumferential direction starting from the side surface. It is preferable to be present.

Further, in the spout with a cover member according to any one of (1) to (4) above, (5) an engaging rib protruding in the radial direction is formed on the outer peripheral surface of the columnar portion, and the spout is used for breaking. The plug is formed with an arc-shaped portion having an engaging rib and an engageable contact surface, and the wing wall is connected to the bottom surface of the arc-shaped portion and extends downward in the axial direction from the bottom surface. It is preferable to be present.

Further, in the spout with a cover member according to any one of (1) to (5) above, (6) the height h1 of the wing wall in the axial direction is the height h2 of the protrusion in the axial direction. The following is preferable.

Further, in the spout with a cover member according to any one of (1) to (6) above, it is preferable that (7) the wing walls are formed on both sides of the protrusion in the circumferential direction.

According to the present invention, it is possible to realize a spout with a cover member that can suppress the dispersal of parts after opening while maintaining the sanitary state of the contents stored in the container.

It is an external view (at the time of setting) of the spout with a cover member in an embodiment, and is the figure which showed the appearance for each part. It is a half cross-sectional view which shows the cross section which cut the spout with a cover member in a YZ plane. It is a partially enlarged view which expanded the α region shown by the broken line in FIG. FIG. 2 is a schematic view showing the structure of the AA cross section in FIG. 2 and explaining the structure of the first twisting mechanism in the embodiment. It is a schematic diagram which shows the structure of the BB cross section in FIG. 2 and explains the structure of the 2nd twisting mechanism in Embodiment. It is a schematic view which saw the spout from the top surface side and the bottom surface side, respectively, among the spouts with cover members. It is a schematic view which looked at the cover from the top surface side and the bottom surface side respectively in the spout with a cover member. It is a schematic diagram which shows the state of the 1st twisting mechanism and the 2nd twisting mechanism in the breaking of a closed body, respectively. It is a schematic diagram explaining the state transition of the cover member 40 before and after folding in 1st Embodiment. It is a schematic diagram explaining the state transition of a spout before and after the breakage of an obstruction body. Schematic diagram illustrating the state transition of the cover before and after the obstruction is broken It is a schematic diagram which shows the state in which the spout of an embodiment is connected to a tube after the obstruction body is broken in the cross section.

Hereinafter, embodiments for preferably carrying out the present invention will be described. Although the X, Y, and Z directions are appropriately set in the description using each of the following figures, these are definitions for convenience of description and do not excessively limit the present invention.

<Spout 100 with cover member>
FIG. 1 is an external view (when set) of the spout 100 with a cover member according to the embodiment, and is a diagram showing the external appearance of each part.
The spout 100 with a cover member in the present embodiment includes a tubular portion 10 to be described later, and a spout 30 including a welded portion 20 provided on the base end side 10a of the tubular portion 10 and fused with a container body (not shown). And a cover member 40 that covers the outer peripheral surface 10b of the tubular portion 10. Further, as is clear from the figure, in the spout 30 of the present embodiment, the tubular portion 10 and the welded portion 20 are formed so that the proximal end side 10a is interposed between them.

The material of the spout 100 with a cover member is not particularly limited, and various known materials can be applied. In particular, it is preferable that the spout 100 with a cover member is made of a resin material that can be molded by injection molding. At this time, the spout 30 and the cover member 40 constituting the spout 100 with the cover member are injection-molded, respectively, and as such a resin material, for example, polypropylene resin or polyethylene resin is suitable.

The base end side 10a has a structure in which two elliptical plates having long sides extending in the Y direction are arranged so as to overlap each other with a predetermined gap in the Z direction. The tubular portion 10 is provided so as to stand in the center of the upper elliptical plate among the two elliptical plates constituting the base end side 10a, and the bottom surface of the lower elliptical plate (the surface opposite to the upper elliptical plate). A welded portion 20 is provided on the surface. The structure of the base end side 10a is not limited to the above example, and may have one elliptical plate (corresponding to a partition plate) as in Patent Document 3, for example.
In addition, various known spout structures can be referred to except for the configurations described in detail below.

The detailed configuration of the spout 30 and the cover member 40 constituting the spout 100 with the cover member of the present embodiment will be described with reference to FIGS. 2 to 7 as appropriate.
As is clear from FIGS. 2, 4 and 5, the tubular portion 10 in the present embodiment includes the closing body 11. Further, as shown in FIG. 2, a flow path FP penetrating along the Z direction is formed on the inner peripheral surfaces of the tubular portion 10 and the welded portion 20. Further, a spiral protrusion 17 is formed at the upper end of the tubular portion 10, and is configured to be screwable with the female screw Ts of the tube T, which is an engaged member described later.

As can be understood from FIGS. 2 and 6, a closing body 11 that can be broken off via the weakened portion WP is integrally formed on a part of the inner peripheral surface 10c constituting the flow path FP of the tubular portion 10. There is. In the present embodiment, an annular small diameter portion (also referred to as a tapered ridge portion 10d) having an inner diameter smaller than that of other portions is formed in a part above the inner peripheral surface 10c, and the taper ridge portion 10d The obstruction body 11 is integrally formed from the inner peripheral side via the weakened portion WP (details will be described later). As a result, as will be described later, the obstructed body 11 of the present embodiment can be broken off via the weakened portion WP.
Further, in the present embodiment, the closed body 11 may be formed so that its upper end (end face in the + Z direction) is substantially the same height as the upper end of the tubular portion 10.

As can be understood from FIGS. The joint rib 13 (including the engaging rib 13p and the engaging rib 13q) is provided. Further, as is clear from FIGS. 2 and 6, the closing body 11 is configured to include a substantially disk-shaped bottom surface portion 19, and the cylinder portion 10 is formed on the bottom surface outer edge side of the bottom surface portion 19 via the weakening portion WP. It is connected to the tapered ridge 10d on the inner peripheral surface 10c.

The weakened portion WP functions as a thin-walled portion whose thickness is reduced along the circumferential direction, and can be broken at the time of breaking the obstructed body 11, which will be described later, by making the portion whose mechanical strength is relatively lowered. It is configured as follows. Therefore, when the weakened portion WP is not broken (when unopened), the inside of the container can be sealed through the closed body 11 and the weakened portion WP, whereby the contents can be appropriately stored. It is possible to do.

The columnar portion 12 of the present embodiment is a columnar member extending upward in the Z direction with the bottom surface portion 19 as a base point. Then, as shown in FIG. 4, the pair of engaging ribs 13p and q of the present embodiment protrude in the radial direction from the outer peripheral surface of the cylindrical portion 12 so as to extend in the ± X direction with respect to the cylindrical portion 12.
In other words, the pair of engaging ribs 13p and q project radially from the outer peripheral surface of the cylindrical portion 12 so as to line up along the X direction.
It should be noted that although the left half of the obstructed body 11 is shown in FIG. 2, the right half is also shown in FIG. 4 (also in FIG. 5) for easier understanding.

A hem column portion 14 protruding in the radial direction from the outer peripheral surface of the columnar portion 12 is formed on the lower side (bottom surface portion 19 side) of the columnar portion 12. More specifically, as shown in FIG. 5, the hem column portion 14 of the present embodiment is expanded in the circumferential direction (θz) so that the planosection is a semicircle with the columnar portion 12 as the center side. It is preferable that the pair is formed with the columnar portion 12.

Further, as can be understood from FIG. 5, the hem column portions 14 are formed in pairs with the columnar portion 12 as the center so that parts of the hem column portions 14 face each other. In the present embodiment, of the pair of hem column portions 14, the one arranged on the −X side with respect to the column portion 12 is referred to as the hem column portion 14p, and the one arranged on the + X side is referred to as the hem column portion 14q.

In this way, the pair of hem column portions 14p and q have a predetermined gap and are partially opposed to each other, so that a predetermined gap is formed on both sides (± Y side in FIG. 5) of the cylindrical portion 12. Will be done. The predetermined gap formed between the hem column portions 14 functions as an accommodating groove portion in which the protrusion 44 of the folding plug 41 can be accommodated. As shown in FIG. 5, two accommodating groove portions 15a of the present embodiment are formed between the hem column portions 14, thereby forming a pair of accommodating groove portions 15a.

As shown in the drawing, the pair of accommodating groove portions 15a are arranged to face each other so as to be arranged in the Y direction with the columnar portion 12 interposed therebetween, but these accommodating groove portions 15a do not necessarily face each other. As a result, in the closed body 11 of the present embodiment, the accommodating groove portion 15a is formed on the bottom surface of the columnar portion 12.

As can be understood from FIGS. 2, 3 and 5, the apex of the cylindrical portion 12 (end in the + Z direction) and the apex of the engaging rib 13 (end in the + Z direction) are approximately heights in the Z direction (bottom surface). The height from the part 19) is different. That is, as shown in FIG. 3, the apex 12t of the cylindrical portion 12 is configured to be higher than the apex 13t of the engaging rib 13.
Further, as shown in FIG. 3, a guide cylinder 41 g is provided on the upper portion of the folding plug 41 of the present embodiment. When the folding plug 41 is inserted, the upper portion of the cylindrical portion 12 is inserted into the guide cylinder 41g. Since the upper portion of the cylindrical portion 12 is inserted into the guide cylinder 41 g in this way, in the present embodiment, a tapered surface 41 gt along the outer surface of the cylindrical portion 12 is formed on the lower inner surface of the guide cylinder 41 g. Further, the lower end surface 41gs of the guide cylinder 41g and the upper end surface 13ts of the engaging rib 13 are in contact with each other, and when the cover member 40 is attached to the spout 30, the upper end surface 13ts of the engaging rib 13 is the guide cylinder 41g. It is a receiving surface for the lower end surface 41 gs.
However, the present invention is not limited to this form, and the apex of the cylindrical portion 12 and the apex of the engaging rib 13 may be configured to have the same height as each other.

Further, in the present embodiment, as shown in FIG. 4, the amount of protrusion of the engaging ribs 13p and q in the radial direction is set to be smaller than the outer diameter of the arcuate portion 43 described later. However, the present invention is not limited to the above configuration, and the engaging rib 13 may protrude in the radial direction from the outer peripheral surface of the cylindrical portion 12 so as to have a length substantially the same as the outer diameter of the arcuate portion 43, for example.

Further, the width of the pair of engaging ribs 13p and q (width in the Y direction in FIG. 4) is set to be smaller than the diameter of the cylindrical portion 12 (the largest width in the Y direction). However, the present invention is not limited to the above configuration, and the width of the engaging rib 13 may be set to be substantially the same as the diameter of the cylindrical portion 12 described above, for example.

Further, as can be understood from FIG. 2, it is preferable that the pair of engaging ribs 13p and q extend upward along the axial direction (Z direction) from the bottom surface portion 19 of the closing body 11 together with the columnar portion 12. That is, in the present embodiment, it can be said that the pair of engaging ribs 13p and q exist as a part of the hem column portion 14 described later. As a result, when the first breaking force f1 and the second breaking force f2, which will be described later, act, these forces can be efficiently transmitted to the weakened portion WP.

The welded portion 20 is a substantially quadrangular prism having a substantially rhombic plan view shape arranged below the base end side 10a. The shape of the welded portion 20 is not particularly limited, and for example, a known shape of the welded portion such as Patent Document 3 may be adopted. That is, at the time of manufacturing a container, two resin or paper sheets (not shown) are used to sandwich the welded portion 20, and then the outer peripheral edge of these two sheets is welded by a known method such as a heat sealing method. ..

For example, such a container is particularly preferably used as an RTH preparation used for intestinal nutrition to the above-mentioned patients, but there is no particular limitation on its use, and it is widely applied not only in the medical field but also in the beverage field and the food field. Is possible. That is, as the content to be filled in the container, a jelly-like liquid can be preferably used in addition to pharmaceuticals and drinking water.

As understood from FIGS. 2, 4, 5 and 7, the cover member 40 includes a pair of folding plugs 41. More specifically, as shown in the drawing, a pair of folds extending downward in the axial direction (Z direction) so as to sandwich the closing body 11 (cylindrical portion 12 or the like) on the inner peripheral surface 40b of the cover member 40. A taking plug 41 is formed.

A pair of knobs 46 are formed on the outer peripheral surface 40a of the cover member 40 so as to extend in the ± Y direction. Further, only a pair of grips 46 are provided so as to extend in the Y direction, but the present invention is not limited to this example, and four grips 46 are formed from the outer peripheral surface 40a so as to extend in the ± Y direction and the ± X direction, respectively. You may be.

As shown in FIGS. 4 to 7, the folding plug 41 can engage with the recess 42 into which the cylindrical portion 12 can be inserted (fitted in the present embodiment) and the engaging rib 13 described above. It is preferable that the structure includes a pair of arcuate portions 43p and q having an abutting surface 43a, and a protrusion 44 formed below the arcuate portion 43 (in the −Z direction).
As shown in the figure, the folding plug 41 of the present embodiment is provided so as to hang down from the inside of the top 40c of the cover member 40 in the Z direction.

Further, as can be understood from FIGS. 4 and 5, in the present embodiment, the pair of arcuate portions 43p and q and the pair of protrusions 44p and q extend in the axial direction (Z direction) to at least one of the outer peripheral surfaces. May be formed with one or more reinforcing ribs 48. As a result, the rigidity of the folding plug 41 is strengthened, and it is possible to prevent the folding plug 41 from being unintentionally bent in the circumferential direction or the radial direction, for example, when the closing body 11 is folded. Further, the reinforcing rib 48 in the present embodiment is formed so as to extend in the axial direction, but the present invention is not limited to this embodiment and may be formed so as to extend along the circumferential direction, or in the axial direction and the circumferential direction. It may extend and have a cross shape.

The folding plug 41 has a Z direction to which the protrusion 44 of the folding plug 41, which will be described later, can be accommodated in the accommodating groove portion 15a provided in the closing body 11 when the cover member 40 is attached to the spout 30. It is configured to have a height. In other words, the folding plug 41 of the present embodiment includes a protrusion 44 that can be inserted into the accommodating groove 15a described above. As described above, in the present embodiment, since a pair of the closing bodies 11 (cylindrical portion 12, etc.) described above are provided so as to be able to be sandwiched, the protruding portions 44 of the present embodiment are the pair of folding plugs 41. It is preferable that a pair is formed so as to project from the bottom surface side of the above (see also FIGS. 4 and 5).

Further, as can be understood from FIGS. 5 and 7, in the folding plug 41 of the present embodiment, at least a part of the side surface of the closing body 11 (in this example, the hem column) is on the side of the protrusion 44 described above. A wing wall 47 extending along the circumferential direction (around the axis θz direction) is formed so as to cover the end portion of the portion 14. Then, as is clear from reference to FIGS. 4 and 5, the wing wall 47 in the folding plug 41 of the present embodiment is connected (continuously) to the side surface of the above-mentioned protrusion 44 to form the side surface. It is preferable that the starting point extends in the circumferential direction (θz).

Further, as understood from FIGS. 3 to 5, the wing wall 47 of the present embodiment is connected to the bottom surface of the arc-shaped portion 43 described above, and is downward in the axial direction (-Z direction in FIG. 2) starting from the bottom surface. It is preferable to extend to. In other words, the wing wall 47 can extend downward from the arcuate portion 43 continuously in the axial direction from the arcuate portion 43.

As described above, the wing wall 47 of the present embodiment is preferably arranged so as to be continuous with both the bottom surface of the arcuate portion 43 and the side surface of the protrusion 44. As a result, the wing wall 47 can surround at least a part of the hem column portion 14 when the closing body 11 is broken, which will be described later. Can be held more safely.

As shown in FIG. 3, the height h1 of the wing wall 47 in the axial direction (Z direction) in the present embodiment is set to be equal to or less than the height h2 of the protrusion 44 in the axial direction. As a result, the folding plug 41 can be inserted more smoothly when it is inserted into the cylinder portion 10. However, the present invention is not limited to the above-mentioned form, and for example, the height h1 of the wing wall 47 may exceed the height h2 of the protrusion 44.

Further, as shown in FIG. 5, the wing wall 47 in the present embodiment is provided so as to extend from each protrusion 44 along both sides (± θz direction) in the circumferential direction so as to extend as a crane wing. In other words, in the present embodiment, it is preferable that the wing walls 47 are formed on both sides of the protrusion 44 in the circumferential direction. As a result, the wing wall 47 can hold a part of the outer circumference of the hem column portion 14 regardless of the opening direction when the closing body 11 is folded. However, the present invention is not limited to the above embodiment, and a wing wall 47 may be formed on at least one side of the protrusion 44 in the circumferential direction as long as the gist of the present invention is not deviated.
As is clear from FIGS. 2 and 3, a predetermined position is provided between the outer peripheral surface of the folding plug 41 and the inner peripheral surface 10c of the tubular portion 10 so that reseal cannot be performed after the closing body 11 is detached. A gap is formed.

Here, the fitting relationship between the closing body 11 and the folding plug 41 in the present embodiment will be described with reference to FIG.
That is, as shown in the figure, the spout 200 with a cover member of the present embodiment has a first undercut portion 12a formed on the closing body 11 and a folding plug 41 corresponding to the first undercut portion 12a. It is mainly characterized by having a second undercut portion 42a formed in.

As can be understood from FIG. 3, the first undercut portion 12a is formed so as to project radially outward, for example, in the cylindrical portion 12 in order to place the closing body 11 inside the cover member 40 after folding. ing. The installation height of the first undercut portion 12a is not particularly limited as long as the second undercut portion 42a, which will be described later, can be overcome, but the columnar portion 12 is at a position facing the recess 42 when the cover is attached. It is necessary.

On the other hand, as can be understood from the figure, the diameter of the second undercut portion 42a is, for example, in the recessed portion 42 so that the cover member 40 can get over the first undercut portion 12a when the cover member 40 is mounted on the tubular portion 10. It is formed so as to project inward in the direction.
Therefore, after the cover member 40 is attached to the tubular portion 10, the first undercut portion 12a and the second undercut portion 42a interfere with each other, so that the closing body 11 tends to remain in the recess 42. As a result, after the weakened portion WP is broken at the time of opening as described above, the closing body 11 can be more effectively separated from the tubular portion 10 together with the cover member 40.

Further, as shown in FIG. 2, a rattling suppressing rib 18 for suppressing rattling after mounting the cover member 40 is provided between the outer peripheral surface 10b of the tubular portion 10 and the inner peripheral surface 40b of the cover member 40. There is. In the present embodiment, the rattling suppressing rib 18 is formed on the outer peripheral surface 10b of the tubular portion 10, but the present invention is not limited to this embodiment, and the rattling suppressing rib 18 may be formed on the inner peripheral surface 40b of the cover member 40. ..

As shown in FIG. 4, in the present embodiment, a pair of recesses 42 are arranged to face each other so as to sandwich the above-mentioned cylindrical portion 12 along the height direction of the folding plug 41. Since the columnar portion 12 is fitted so as to be sandwiched between the pair of recesses 42 in the present embodiment, the distance between the pair of recesses 42 facing each other (distance in the Y direction in FIG. 4) is the distance between the columnar portions 12. It is set to be smaller than the diameter (the corresponding distance in the Y direction in FIG. 4).

As described above, in the present embodiment, the columnar portion 12 can be inserted into the pair of recesses 42, and when the cover member 40 is attached to the spout 30 (hereinafter, such a state is referred to as "when the cover is attached"). By being fitted into (also referred to as), they are brought into close contact with each other. In this embodiment, a form in which the pair of recesses 42 and the columnar portion 12 are fitted is illustrated, but if the above-mentioned protrusions 44 are accommodated in the accommodating groove portion 15a, they are not necessarily fitted and are not necessarily fitted to each other. It may be in contact with each other. In the present embodiment, the cylindrical portion 12 and the recessed portion 42 can be fitted from the lower end to the upper end of the folding plug 41 along the Z direction. As a result, the closing body 11 is in a form of being relatively firmly adhered to the cover member 40, and after the closing body 11 is folded off, the closing body 11 does not remain in the tubular portion 10 and is separated together with the cover member 40. It is possible to do.

As shown in FIG. 4, the pair of arcuate portions 43p and q are members having an arc shape centered on the origin so as to form a left semicircle shape and a right semicircle shape, respectively. The above-mentioned recess 42 is formed on the inner side surface side (origin side side surface) of each arc-shaped portion 43.
The pair of protrusions 44p and q are provided so as to project downward from the central portion of the lower end surfaces of the pair of arcuate portions 43p and q (the lower end of the folding plug 41 in FIG. 2) (FIG. 2). See also 4 and FIG. 5). The amount of the protrusion 44 in the Z direction is not particularly limited as long as it fits within the accommodation groove 15a, but it is preferably slightly smaller than the depth (size in the Z direction) of the accommodation groove 15a.

As can be seen from the illustration, the inner surfaces of the pair of protrusions 44p and q are formed along the inner surface of the recess 42, and in the present embodiment, the side surface of the protrusion 44 and the side surface of the columnar portion 12 are predetermined. A gap is formed. As a result, the folding plug 41 can be smoothly inserted into the tubular portion 10. In the present embodiment, the gap is formed between the side surface of the protrusion 44 and the side surface of the cylinder 12, but the present invention is not limited to this form, and the pair of protrusions 44p and q are the cylinder 12 as in the case of FIG. May be in close contact with each other so as to sandwich the lower end portion (side surface facing the side surface of the protrusion 44).

Similarly, as is clear from FIGS. 4 and 5, the contact surfaces 43a of the arcuate portions 43p and q and the side surfaces of the pair of engaging ribs 13p and q are in close contact with each other without forming a gap when the cover is attached. It is configured. Further, the side surface 14a of the hem column portion 14p and the side surface 14b of the hem column portion 14q and the side surfaces 44a and 44b of the protruding portions 44 facing each other are arranged so as to face each other with a slight gap when the cover is attached. There is.

However, the present invention is not limited to this example. That is, as long as the first breaking force f1 and the second breaking force f2, which will be described later, act appropriately, for example, when the cover is attached, the contact surface 43a of the arcuate portions 43p and q and the pair of engaging ribs 13p and q The side surface of the hem column portion 14p and q may have a predetermined gap, or the side surface 14a of the hem column portion 14p and q and the side surface of the protrusion 44 may be in close contact with each other.

<1st twisting mechanism FTM>
Next, with reference to FIGS. 4 and 8, the first twisting mechanism FTM in the present embodiment will be described in detail. The first twisting mechanism FTM is composed of a pair of engaging ribs 13p and q in the closing body 11 and a pair of arcuate portions 43p and q in the folding plug 41.
That is, the portion shown by the AA cross section in FIG. 2 corresponds to the first twisting mechanism FTM of the present embodiment, and the detailed structure thereof is shown in FIG. 4 as described above.

As shown in the figure, in the present embodiment, the first twisting mechanism FTM is provided at the main portion of the closed body 11 in the height direction (Z direction) from the upper end to the vicinity of the bottom surface portion 19. On the other hand, as will be described later, the second twisting mechanism STM is arranged between the weakened portion WP and the first twisting mechanism FTM in the height direction (Z direction). In other words, it is preferable that the Z-direction length of the first twisting mechanism FTM is set to be larger than the Z-direction length of the second twisting mechanism STM.

As a result, it is possible to apply an appropriate breaking force to the weakened portion WP even from the first twisting mechanism FTM which is relatively separated from the weakened portion WP.
That is, when the cover member 40 is twisted in the opening direction (around the Z axis, also referred to as the θz direction), the contact surfaces 43a of the arcuate portions 43p and q and the pair of engaging ribs 13p and q engage with each other to form the first cover member 40. It is possible to apply a breaking force f1 (see FIG. 8A).

<Second twisting mechanism STM>
Next, the second twisting mechanism STM in the present embodiment will be described in detail with reference to FIGS. 5 and 8. The second twisting mechanism FTM is formed with a pair of accommodating groove portions 15a (that is, formed between the hem column portions 14p and q) provided on the lower side (lower in the Z direction and the bottom surface of the columnar portion 12) of the closing body 11. , A pair of protrusions 44p and q provided on the top surface (lower end in the Z direction) of the folding plug 41 are included.

That is, the portion shown by the BB cross section in FIG. 2 corresponds to the second twisting mechanism STM of the present embodiment, and the detailed structure thereof is shown in FIG. 5 as described above.
In the present embodiment, the closing body 11 and the folding plug 41 are folded in the second direction below the first twisting mechanism FTM described above in the axial direction (Z direction) and above the weakening portion WP in the axial direction. It is configured to have a second twisting mechanism that acts on the taking force f2.

Further, as can be understood from FIG. 8 and the like, the folding plug 41 of the first twisting mechanism FTM and the second twisting mechanism STM is closed at different positions in the circumferential direction (θz direction) orthogonal to the axial direction described above. It is configured to abut against the body 11. More specifically, in the present embodiment, the direction in which the pair of engaging ribs 13 are lined up in the first twisting mechanism FTM (Y direction) and the direction in which the pair of protrusions 44 are lined up in the second twisting mechanism STM (X direction) are , It is desirable that they are orthogonal to each other (cross-shaped).

That is, the direction in which the pair of engaging ribs 13p and q are lined up in the XY plane (X direction in FIG. 4) and the direction in which the pair of protrusions 44p and q are lined up in the XY plane (Y direction in FIG. 5) are orthogonal to each other. It can be said that there is.
As a result, regardless of whether the cover member 40 is twisted clockwise or counterclockwise by pinching the knob portion 46 at the time of breaking as described later, the first twisting mechanism FTM and the second twisting mechanism STM are shafts. It will act in different positions around it.

As described above, in the present embodiment, when the closing body 11 is broken through the weakened portion WP, the breaking force acts at a plurality of different positions in the Z direction. In order to obtain such an effect, specifically, in the present embodiment, the side surfaces of the hem column portion 14 and the protrusion 44 facing each other are such that the engaging rib 13 and the arcuate portion 43 face each other. It is configured to extend in a direction perpendicular to the side surface or in a direction where it intersects diagonally.

Further, in the present embodiment, as described above, when the closing body 11 is folded, the wing wall 47 holds at least a part of the outer circumference of the hem column portion 14 (in this example, the vicinity of the end portion of the hem column portion 14 described above), so that the wing wall 47 is folded. The closed body 11 after removal is suppressed from being unintentionally dropped, and the cover member 40 can hold the closed body 11 after removal more safely.

In the present embodiment, an example in which the breaking force acts at two different positions in the Z direction is shown, but the present invention is not limited to this example, and the breaking force may be applied at three or more positions. It is desirable that at least one of them is arranged at a position near / close to the weakened portion WP.
Further, in the present embodiment, as can be easily understood from FIGS. 2 to 5, the above-mentioned breaking force acts at a position close to the weakened portion WP.

Here, when using the contents of the container, first, the grip portion 46 of the cover member 40 is picked and rotated in the opening direction (θz direction). As described above, the opening direction may be clockwise or counterclockwise.
Then, as shown in FIGS. 9 and 10, the force acting at the time of breaking due to the rotation by the cover member 40 is efficiently transmitted to the weakened portion WP, and the closing body 11 is bounded by the fracture surface WP'. It can be detached from the tubular portion 10. Thereby, in the present embodiment, it is possible to prevent the obstructed body 11 from being unintentionally twisted, and to prevent the weakened portion WP from becoming indestructible at the time of breaking.

That is, as shown in FIG. 9, the closing body 11 was connected to the inside of the tubular portion 10 of the spout 30 before folding via the weakened portion WP, but after the cover member 40 was detached after folding, The obstructed body 11 is removed leaving the fracture surface WP', and a hole is formed.
On the other hand, as shown in FIG. 10, the closing body 11 was connected to the inside of the cover member 40 before folding via the weakened portion WP in the tubular portion 10, but the cover member before folding after folding. The obstructed body 11 having the fracture surface WP'remains inside the 40.

As a result, the contents stored in the container can be poured out from the tip of the tubular portion 10 via the flow path FP. That is, as shown in FIG. 11, for example, when the container is used as the RTH preparation, the tube T on the patient side conforming to ISO80369-3 is engaged with the tip of the tubular portion 10. At this time, a screw-shaped protrusion 17 is formed at the upper end of the tubular portion 10, and the screw-shaped protrusion 17 is screwed with the female screw Ts of the tube T.

As a result, the male connector portion Ta of the tube T and the inner peripheral surface on the upper end side of the cylinder portion 10 are in close contact with each other, and the flow path FP of the spout 30 and the flow path Tf of the tube T communicate with each other to leak the contents in the container. It is possible to inject it to the patient side.
In the present embodiment, as shown in FIG. 11, since the tapered raised portion 10d is formed below the lower end of the male connector portion Ta of the tube T, the inner circumference of the tubular portion 10 is formed after the weakened portion WP is broken. There is no possibility that the remaining portion (burr) of the fracture surface WP'remaining on the surface side comes into contact with the male connector portion Ta, and it is possible to avoid hindering the insertion of the male connector portion Ta. As a result, the inner peripheral surface 10c on the upper end side of the tubular portion 10 and the outer peripheral surface of the male connector portion Ta can be brought into close contact with each other, and the sealing property can be further improved.

According to the spout 100 with a cover member of the present embodiment described above, optimum opening performance is realized by using the first twisting mechanism FTM and the second twisting mechanism STM while maintaining the sanitary state of the contents stored in the container. In addition to this, the wing wall 47 provided on the folding plug 41 makes it possible to suppress the dispersal of parts after opening (the dispersal of the closing body 11 after folding).

Each of the above-described embodiments can be modified in various ways without departing from the spirit of the present invention.
For example, in the above-described embodiment, polypropylene resin is used by using the same material for the spout 30 and the cover member 40, but these materials may be different. For example, the material of the cover member 40 may be a material harder than the spout 30 (for example, if the spout 30 is a polyethylene resin, the cover member 40 may be a polypropylene resin, etc.).

Further, in the above embodiment, the injection port corresponding to ISO80369-3 specified to have a small diameter is most suitable, but the injection port does not necessarily conform to this standard, and various injections such as a normal spout are required. It can also be applied as a port.
Further, the rattling suppressing rib 18 may be formed over the entire circumference (around the Z axis) of the outer peripheral surface 10b of the tubular portion 10 or the inner peripheral surface 40b of the cover member 40, or may be formed at a plurality of intermittent locations (two, etc.). It may be a form formed at least a part of the entire circumference as in.

Further, from the viewpoint of ease of opening, the folding plug 41 and the closing body 11 (cylindrical portion 12, pair of engaging ribs 13 and hem column portion 14) have substantially the same mechanical strength. preferable. However, the present invention is not limited to this form, and the materials may be different from each other as long as the closing body 11 or the folding plug 41 does not unintentionally twist and hinder the breakage of the weakened portion WP.
Further, in each of the above-described embodiments and modifications, the spout 30 and the cover member 40 have been described in a separable manner, but the present invention is not limited to this embodiment, and the spout 30 and the cover member 40 are not limited to this embodiment, and they are easily broken at the time of breaking through a broken portion or the like. The initial state (for example, at the time of product shipment) may be configured as one.

Further, in the above-described embodiment, the circumferential end portion (tip side) of the wing wall 47 has substantially the same thickness as the base end portion (protrusion portion 44 side) (see FIG. 5). For example, the circumferential end (tip side) of the wing wall 47 may have a tapered shape.
Further, in the above-described embodiment, the angles formed at both ends of the wing wall 47 that is crane-winged along both sides in the circumferential direction from the protrusion 44 (the center of the cylindrical portion 12, _{the tip of the wing wall 47p 1} and the wing wall 47p). _The angle formed by the tip of 2) was approximately 120 °. However, the present invention is not limited to this embodiment, and the length of the wing wall 47 extending along the circumferential direction may be appropriately adjusted as long as the above-mentioned circumferential end portion does not interfere.

The above-described embodiment and modification are merely examples, and a new spout with a cover member may be formed by appropriately combining each embodiment and modification as long as the gist of the present application is not deviated. Moreover, the above-described embodiment may include any member not shown in each figure. Further, the members shown in each figure may be changed or omitted as long as the gist of the present invention is not deviated.

The fields of application of the present invention are not limited and can be widely used in any field dealing with liquid substances, for example, medical treatment, foods, chemistry and the like. Above all, it can be preferably used in the medical field, particularly in enteral nutrition using an injection port.

10: Cylinder part 20: Welding part 30: Spout 40: Cover member WP: Weakened part FTM: First twisting mechanism STM: Second twisting mechanism 100, 200, 300: Spout with cover member

Claims (7)

A spout with a cover member, comprising a spout having a tubular portion and a welded portion provided on the base end side of the tubular portion and welded to the container body, and a cover member covering the outer peripheral surface of the tubular portion. ,
An obstruction body that can be broken off via the weakened portion is integrally formed on the inner peripheral surface of the tubular portion.
The closed body has a columnar portion extending upward in the axial direction, and an accommodating groove portion is formed on the bottom surface of the columnar portion.
Inside the cover member, a folding plug extending downward in the axial direction is formed so as to grip the closed body.
The folding plug includes a recess into which the columnar portion can be inserted and a protrusion into which the accommodating groove can be inserted.
A wing wall extending along the circumferential direction is formed on the side of the protrusion so as to cover at least a part of the side surface of the closed body.
A spout with a cover member that is characterized by this. The closed body further has a hem column portion that protrudes in the radial direction from the outer peripheral surface of the columnar portion.
The spout with a cover member according to claim 1, wherein the accommodating groove portion is formed between the hem column portions. The hem column portions are formed in pairs by being expanded in the circumferential direction so that the planosection has a semicircular shape with the columnar portion as the center side.
The folding plugs are formed in pairs so as to sandwich the cylindrical portion, and the folding plugs are formed in pairs.
The spout with a cover member according to claim 2, wherein the protrusions are formed in pairs so as to project from the bottom surfaces of the pair of folding plugs. The spout with a cover member according to any one of claims 1 to 3, wherein the wing wall is connected to a side surface of the protrusion and extends in the circumferential direction starting from the side surface. Engagement ribs protruding in the radial direction are formed on the outer peripheral surface of the cylindrical portion.
The folding plug is formed with an arc-shaped portion having an engaging rib and an engageable contact surface.
The spout with a cover member according to any one of claims 1 to 4, wherein the wing wall is connected to the bottom surface of the arcuate portion and extends downward in the axial direction from the bottom surface. The spout with a cover member according to any one of claims 1 to 5, wherein the height h1 of the wing wall in the axial direction is equal to or less than the height h2 of the protrusion in the axial direction. The spout with a cover member according to any one of claims 1 to 6, wherein the wing walls are formed on both sides of the protrusion in the circumferential direction.

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